out of prison in 1984. it was the same year kevin collins was abducted. using a different name jackson lived one block away from the school. jackson was named a person of interest, but that was all. he died in 2008. fast-forward to 2013 when san francisco police reopened the cold case. the family held their breath. bones dug up in the garage of jackson's house appeared to be animal bones. still collins' family is stunned and police never connected these dots before. >> for the individual with five names that now we know had a history of molesting young boys, it seemed like he should have been a stronger suspect back then. >> they said he was a person of interest in 1984. why didn't they connect that with the arrest made in 1981? alias or no as, they had fingerprints. >> i am not disparaging what they are doing now. it looks like they are doing everything they can. but we had our office right next door to where this guy was. we were there for six months and he was living there the whole time probably laughing at us. >> it is hard going through it all again, and we have nothing concrete.